[TechAssist] Re: CTC167CN - Retrace Lines/Bleeding Picture
- From: "Webster's TV" <webstertv@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 16 Dec 2004 09:13:58 -0600
David,
Here's a tip, on a problem I had with a CTC167, with blank raster and
retrace lines. Check for 5v on base of Q5004 located on video board on
picture tube. Had no 5v here, backtracked to 5v source, had no 5v source, 5v
source comes off of 12v source, checked voltage on Q4106 (12v run reg.), had
12v here, but none on diode CR4118. Replace CR4118 to solve.
Dan Webster
Webster's TV
Shullsburg, Wi.
----- Original Message -----
From: "David" <mr_fixit@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 05, 2004 12:24 PM
Subject: [TechAssist] CTC167CN - Retrace Lines/Bleeding Picture
> Merry Christmas Techs,
>
> I have this CTC167CN that was given to me, I would like to fix it for my
> son's room if possible. Picture has retrace lines and is a bit on the
> bright side with bleeding to the right of images (like too much drive
> level). When I turn down the G2 (screen) there are dark patches. All the
> CRT drive transistors have normal voltage and signal levels. Is this the
> tube or something else? I think I read something at one time regarding
> the luminance buffer causing a similar symptom. Could anyone confirm
> this and which transistor is the luminance buffer?
>
> Thanks,
>
> David Lessard
> Alexandria, Ontario
> mr_fixit@xxxxxxxxxxxx
>
>
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